Diesel Data: Automotive Repair

Vehicle Damage Warnings

CAUTION:
- Spark plug wire damage may occur if the spark plug is moved more than 114 inch away from the engine ground.
- Do not leave any one spark plug cable disconnected any longer than 30 seconds or possible heat damage to catalytic converter will occur.
- Test must be performed at idle and in park only with the parking brake on.
- Always install the cable back on the coil tower after testing to avoid damage to the coil and catalytic converter.